The mantle: is made of solid rock contains more iron than the crust is as hot as the surface of the sun all of the above

The trp operon in e.coli regulates genes that code for enzymes required for synthesis of the repressible operon. when tryptophan is not available amino acid tryptophan. the trp operon is a in the environment, the trp repressor protein activeinactiveregulated. therefore, rna polymerase can bind to the genes to begin transcription.

Which is an example of a population?

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an